miniature poodle vs poodle dog

miniature poodle and poodle dog both are nouns.

Word	Noun	Adjective	Verb	Adverb
miniature poodle	Yes	No	No	No
poodle dog	Yes	No	No	No

As nouns, poodle dog is a hypernym of miniature poodle; that is, poodle dog is a word with a broader meaning than miniature poodle:

miniature poodle: a breed of small poodles
poodle dog: an intelligent dog with a heavy curly solid-colored coat that is usually clipped; an old breed sometimes trained as sporting dogs or as performing dogs

Other hypernyms of miniature poodle include poodle.

miniature poodle (noun)	poodle dog (noun)
a breed of small poodles	an intelligent dog with a heavy curly solid-colored coat that is usually clipped; an old breed sometimes trained as sporting dogs or as performing dogs